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July 23rd, 2026 :: 6:47 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated July 23rd at 5:54 pm 
Mostly Sunny
Temperature:75°F Dew Point:54°F
Barometer:30.15 inHg Wind:N 9 Mph
Humidity:47.0% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jul 23rd
Friday
Jul 24th
Saturday
Jul 25th
Sunday
Jul 26th
Monday
Jul 27th
Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Mostly Sunny
73°F
67°F
58°F
81°F
65°F
85°F
73°F
91°F
72°F
 
 Decatur Detailed Weather Forecast  
 
Thursday, July 23rd, 2026
Evening Temperature: 65°F
Mostly clear.
Friday, July 24th, 2026
Overnight Temperature: 59°F
A mix of cloudy and clear skies.
Morning Temperature: 62°F
Cloudy with sunny periods.
Afternoon Temperature: 66°F
Mostly cloudy.
Evening Temperature: 65°F
A mix of cloudy and clear skies.
Saturday, July 25th, 2026
Overnight Temperature: 65°F
A mix of cloudy and clear skies.
Morning Temperature: 65°F
A mix of cloud and sun.
Afternoon Temperature: 78°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
Clear. Chance of a thunderstorm.
Sunday, July 26th, 2026
Overnight Temperature: 73°F
Mostly clear with a chance of showers or thundershowers.
Morning Temperature: 76°F
A mix of sun and cloud with a chance of showers or thundershowers.
Afternoon Temperature: 84°F
Sunny with cloudy periods with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 78°F
Mostly clear with a slight chance of showers or thundershowers.
Monday, July 27th, 2026
Overnight Temperature: 74°F
A mix of cloudy and clear skies with a chance of showers or thundershowers. Windy at times.
Morning Temperature: 75°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 89°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 86°F
Clear. Chance of a thunderstorm. Windy at times.
Tuesday, July 28th, 2026
Overnight Temperature: 76°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 73°F
Sunny. Windy at times.
Afternoon Temperature: 80°F
A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 72°F
Clear with cloudy periods. Chance of a thunderstorm. Windy at times.
Wednesday, July 29th, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 77°F
Sunny.
Evening Temperature: 70°F
Clear.
Thursday, July 30th, 2026
Overnight Temperature: 63°F
Clear.
Morning Temperature: 65°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 80°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Clear with cloudy periods with a few showers. Chance of a thunderstorm. Windy at times.
Friday, July 31st, 2026
Overnight Temperature: 66°F
Clear with showers likely.
Morning Temperature: 73°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 86°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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